Author:Kleynhans, W; Olivier, JC; Salmon, BP; Wessels, Konrad J; Van den Bergh, FDate:Jul 2009It is proposed that the NDVI time series derived from MODIS multitemporal remote sensing data can be modelled as a triply (mean, phase and amplitude) modulated cosine function. A non-linear Extended Kalman Filter was developed to estimate the ...Read more
Author:Pritchard, SW; Malekian, R; Hancke, GP; Abu-Mahfouz, Adnan MIDate:Oct 2017Software-Defined Wireless Sensor Networking (SDWSN) is an emerging paradigm that seeks to alleviate the inherent resource constraint issues present in Wireless Sensor Networks (WSN) by adopting a Software-Defined Networking (SDN) approach to ...Read more
Author:Crafford, Gerhardus J; Rosman, BDate:Nov 2022Different reinforcement learning (RL) methods exist to address the problem of combining multiple different learners to generate a superior learner. These existing methods usually assume that each learner uses the same algorithm and/or state ...Read more
Author:Mdakane, L; van den Bergh, F; Moodley, DDate:Oct 2014The rapid increase in population and migration to urban areas has caused a pronounced increase in human settlements around the world. The diversity of land features, mixed-use settlements, terrain, and heterogeneity of building materials and ...Read more
Author:Marivate, V; Sefara, Tshephisho JDate:Aug 2020We study the effect of different approaches to text augmentation. To do this we use three datasets that include social media and formal text in the form of news articles. Our goal is to provide insights for practitioners and researchers on ...Read more
Author:Stoltz, George G; Nel, ALDate:Oct 2020In this paper, we improve image reconstruction in a single-pixel scanning system by selecting an detector optimal field of view. Image reconstruction is based on compressed sensing and image quality is compared to interpolated staring arrays. ...Read more
Author:Nkosi, MT; Mekuria, FissehaDate:May 2011Mobile devices are being considered as service platforms for mobile health information delivery, access and communication. However they face challenges with regard to delivering secure multimedia based health services due to limitations in ...Read more
Author:Hunter, Lawrance; Fan, JDate:Nov 2014Comfort is a highly subjective phenomenon, with no unanimously agreed quantitative definition. In the Oxford English Dictionary and Webster’s Third New International Dictionary, comfort is defined as ‘freedom from pain, trouble and anxiety; ...Read more
Author:Aramide, B; Pityana, Sisa L; Sadiku, R; Jamiru, T; Popoola, PDate:Jun 2021Farming tools are often exposed to high wear rate in dry agricultural land areas. This makes the farming activity to have problems of recurrent labour, idle time, and the extra expenses in replacing the damaged implements like ploughshares. ...Read more
Author:Naidoo, Darryl; Litvin, Ihar; Forbes, ADate:Feb 2017We investigate the selection of a flat-top beam and a Gaussian beam inside a laser cavity on opposing mirrors. The concept is tested external to the laser cavity in a single pass and double pass regime where the latter mimics a single round ...Read more
Author:Biermann, SM; Van Ryneveld, MDate:Jul 2007This finding suggests the need for a range of different housing typologies, with 'higher cost / higher potential benefit' housing typologies on scarce well-located land allocated to those with the best chance of exploiting those potential ...Read more
Author:Moodley, SS; Van der Berg, W; Veldman, CSDate:Apr 2003The CSIR - NML (Council for Scientific and Industrial Research, National Metrology Laboratory) of South Africa, manufactured a 10-pF ultra-low expansion quartz capacitors in the early 1970s. Although the capacitors were extremely stable and ...Read more
Author:Lekoadi, Paul M; Tlotleng, Monnamme; Maledi, N; Masina, Bathusile NDate:Nov 2019Selective laser melting (SLM) is a powder bed additive manufacturing technique that produces components layerby-layer from computer aided designs as opposed to conventional manufacturing methods. Although this manufacturing technique offers ...Read more
Author:Haelterman, R; Bogaers, Alfred EJ; Uekermann, B; Scheufele, K; Mehl, MDate:Jul 2016The Quasi-Newton Inverse Least Squares method has become a popular method to solve partitioned interaction problems. Its performance can be enhanced by using information from previous time-steps if care is taken of the possible ill-conditioning ...Read more
Author:Adedeji, K; Hamam, Y; Abe, B; Abu-Mahfouz, Adnan MIDate:Sep 2016Recent advances in technologies has led to the use of wireless communication networks for the transmission of information. However, the broadcast nature of wireless channels has made it vulnerable to attacks. In this paper, we present work ...Read more
Author:Mashiri, M; Maunder, D; Venter, C; Lakra, A; Bogopane-Zulu, H; Zukulu, R; Buiten, D; Boonzaier, DDate:Apr 2005While transport is a significant enabler of sustaining livelihoods among poor communities, it is clearly also increasingly deemed important to deliver the benefits of greater inclusion of persons with disabilities into society, enabling them ...Read more